wp-content/themes/twentytwelve/functions.php:278Filter TinyMCE CSS path to include hosted fonts.
$mce_cssstringstringfunction twentytwelve_mce_css( $mce_css ) { $font_url = twentytwelve_get_font_url(); if ( empty( $font_url ) ) { return $mce_css; } if ( ! empty( $mce_css ) ) { $mce_css .= ','; } $mce_css .= esc_url_raw( str_replace( ',', '%2C', $font_url ) ); return $mce_css;}Introduced in Twenty Twelve 1.2. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-content/themes/twentytwelve/functions.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.